## Algebra for college students by Bernard Kolman; Arnold Shapiro

By Bernard Kolman; Arnold Shapiro

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Precálculo

Este reconocido libro aborda el precálculo desde una perspectiva novedosa y reformada que integra l. a. tecnologa de graficación como una herramienta esencial para el descubrimiento matemático y para l. a. solución efectiva de problemas. A lo largo del texto se explican las ecuaciones paramétricas, las funciones definidas por partes y los angeles notación de límite.

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Example text

Stock at per share at Thursday's opening of the stock market. Later in the day, he sells y shares of Gulf and Western stock at per share and shares of Holiday Inn stock at per share. Write a polynomial which expresses the net of his transactions for the day. An artist takes a rectangular piece of cardboard whose sides are and and cuts out a square of side (see Figure to obtain a mat for a painting. Write a polynomial giving the area of the mat; that is, what is the area of the remaining figure?

We must work inside these grouping symbols before we can remove them. 2f or 6. The number TT is irrational; therefore, we cannot say are approximations for computational use only. " 3, -j-, These where the PROGRESS TEST 1A 2. l . 72 are (a) natural numbers (c) irrational numbers The numbers numbers ;, V3, - � are (c) real numbers (b) rational num- (d) none of these. (a) irrational numbers (d) none of these. (b) rational 37 38 -3 3. 4. 4. 3;0-=_� a = 3, b 2. 5. 2xx -6y -y x -1, y = 1. 3[(a + 2b) -(2b -a)] a = -2, b = -1, = 5(xa-y)1 b )-3(2bx2-y)a ).

B) rational 37 38 -3 3. 4. 4. 3;0-=_� a = 3, b 2. 5. 2xx -6y -y x -1, y = 1. 3[(a + 2b) -(2b -a)] a = -2, b = -1, = 5(xa-y)1 b )-3(2bx2-y)a ). 8. 2 ( + ( 112+-81 _181 1 2 10. 31x-2l -21l3xl 2+yl31 -YI x = -2, y = -3. 2. x = y = 2. -4 x x 14. 1liE REAL NUMBER SYSTEM On a real number line, indicate the integers that are greater than than Evaluate when Evaluate when 6. Evaluate 7. = = c when c Simplify and less Simplify -6. 9. Evaluate Evaluate when 1. when 1 1. Evaluate Evaluate · when - 1, Graph the inequality 1 � < Graph the inequality � � I, an integer.